GLAST Mission — LAT Project Gamma-ray Large Area

GLAST Mission - LAT Project Gamma-ray Large Area Space Telescope DOE/NASA Review, March 31, 2004 GLAST Mission Large Area Telescope Project Status March 31, 2004 Lowell A. Klaisner, Project Manager Stanford Linear Accelerator Center klaisner@slac. stanford. edu rev. 13 1

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 Introduction • The transition to the first flight units had the expected challenges and impacts – The LAT team is effectively stepping up to solve problems • Producing flight hardware – First tower integrated with the grid this fiscal year – Tight, success-oriented schedule • We will see risk to the instrument delivery date until we have established a production rate history – Plan has 9 weeks float to delivery for observatory integration • Overall project contingency is OK – Project is 65% complete – Contingency is 29% of cost to go • Funding in the current fiscal year is an issue – All funding for FY 04 is allocated rev. 13 2

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 GLAST MISSION SUMMARY • Objective: Larger field of view (FOV), higher sensitivity, and broader energy detection range than any previously flown gamma-ray mission. • Mission Duration: • Orbit: • Launch Date: • Launch Vehicle: • Launch Site: rev. 13 5 yrs (10 yr Goal) 565 km Circular, 28. 5° Inclination February 2007 Delta 2920 H-10 Kennedy Space Center 3

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 GLAST Observatory LAT GBM Na. I Sensors LAT Radiators Solar Array GBM BGO Sensors +Z Spacecraft +Y +X rev. 13 4

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 Instrument Structure Anti Coincidence Detector 16 Tracker Modules Grid 16 Calorimeter Modules Electronics Modules Radiators Mass Power rev. 13 3000 Kg 650 Watts 5

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 LAT Organization Chart Collaboration Science Team Principal Investigator P. Michelson Instrument Scientist S. Ritz EPO L. Cominsky Instrument Science Performance S. Ritz Senior Science Advisory Committee N. Gehrels Project Manager L. Klaisner D. Horn J. Martin D. Nicholson, Admin Instrument Advisory Committee S. Kahn Deputy for Systems D. Horn Project Controls T. Boysen Design Integration & Analysis M. Nordby Mission Assurance D. Marsh Electrical Integration G. Haller Manufacturing Eng. J. Clinton System Engineering P. Hascall Integration &Test E. Bloom TKR R. Johnson CAL N. Johnson rev. 13 ACD D. Thompson Mechanical M. Campell DAQ & FSW G. Haller ISOC W. Craig (acting) D. Lung, Deputy SAS R. Dubois 6

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 Partner Contributions to LAT • Tracker (TKR) - Italy (ASI/INFN): provide Si-strip detectors & assemble & test TKR modules Tracker - Japan: provide Si-strip detectors & oversee detector production - SU-SLAC & UCSC (USA): provide Si-strip detectors, front-end electronics, cable plant, components • Calorimeter (CAL) - IN 2 P 3 (France): mechanical structure - Sweden: Cs. I xtals & acceptance testing - NRL (USA): Fabricate, assemble and test CAL modules • Anticoincidence Detector (ACD) • - GSFC (USA) Fabricate, assemble and test the ACD including micrometeoriod shield / thermal blanket • Data Acquisition System (DAQ) - SU-SLAC & NRL (USA): Data acquisition hardware & flight software • Mechanical/Thermal System - SU-SLAC (USA): provide LAT Grid, thermal radiators, heat pipes & ancillaries LAT Integration & Test - SU-SLAC (USA): assembly & test of LAT • - NRL (USA): instrument-level environmental tests rev. 13 ACD e+ e– Grid Calorimeter All partners contributing to science analysis preparations: software, science simulations 7

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 International agreements • Mo. As between Stanford Univ-SLAC and: – INFN, ASI, Italy pending signature – IN 2 P 3, France; NRL revised & signed – CEA/DSM/DAPNIA, France; NRL revised & signed – Royal Inst. of Technology & Stockholm Univ. , Sweden; NRL – Hiroshima Univ. , ISAS & RIKEN, Japan; UCSC/SCIPP – NASA – Department Of Energy • signed Agency level agreements – NASA – CNRS/IN 2 P 3 Agreement pending; draft exchanged – NASA – CEA Agreement signed – NASA – ASI Agreement pending; draft exchanged – NASA – Japan draft sent to JAXA – NASA – Sweden draft in process rev. 13 8

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 Budget, Cost, Funding, Performance rev. 13 9

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 Cost and Schedule Variance 1 month MAR 03 APR 03 MAY 03 JUN 03 JUL 03 AUG 03 SEP 03 OCT 03 NOV 03 DEC 03 JAN 04 FEB 04 BCWS 49, 452 52, 780 55, 210 57, 854 60, 114 62, 777 66, 081 69, 052 69, 801 73, 433 77, 394 81, 916 BCWP 46, 114 49, 627 51, 835 54, 564 56, 229 58, 348 60, 548 62, 648 69, 724 73, 353 76, 574 80, 742 ACWP 45, 435 48, 344 51, 125 54, 402 57, 264 59, 429 61, 990 63, 894 67, 721 71, 081 74, 989 78, 460 CV 679 1, 283 710 162 -1, 035 -1, 081 -1, 443 -1, 246 2, 003 2, 271 1, 585 2, 281 SV -3, 338 -3, 152 -3, 375 -3, 290 -3, 885 -4, 428 -5, 533 -6, 404 -76 -80 -820 -1, 175 rev. 13 10

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 Contingency Analysis (K$) rev. 13 11

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 GLAST Mission Office Support in FY 04 • The GLAST mission management and the LAT project management identified areas were additional manpower would help assure that the project meet its goals. The mission office added funds to the project for this additional staff. – Integration and Test Staff $ 523 K – Tracker Staff $ 738 K – Performance and Safety Assurance $ 973 K – Flight Software Staff $ 747 K Total $2, 981 K • In addition, the mission office added funds to support the costs associated with the following CCB actions: – ACD Mechanical Materials and Support $ 195 K – ACD Photomultiplier Anomaly Resolution $ 299 K – ACD Base Electronics Assembly $ 222 K – ISIS Scope Change $ 94 K Total $ 810 K Total funds added $3, 791 K • Also, the Mission Office has provided technical support – Thermal Engineering – EMI/EMC Engineering – Tracker and ACD Management – Mechanical Analysis rev. 13 12

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 History of the Budget at Complete Since Rebaseline rev. 13 13

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 BAC projections to end of project • Contingency available – 29% of cost to go $12, 447 K • Allocation of project contingency since rebaselining – Between the end of July 03 and the end of February 04 • Earned value $24, 513 K • Allocation of cont. $ 4, 879 K • Percentage 20% • Rate of Allocation over the last 7 months – $697 K per month – Projection at this rate for the remaining 16 months $11, 152 K • Rebaseline Cost risk will decline as project matures rev. 13 14

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 FY 04 Cash Flow * Mission office moved $500 K of LAT funding from FY 05 to FY 04 • • Planned costs March through September – Project additional funds needed on FY 04 • At $697 K per month • At 20 % of costs (recent experience) • At 29% of costs (rate for the remainder) $29, 108 K $ 4, 182 K $ 5, 821 K $ 8, 441 K Mitigation – Move activities into FY 05 – $5, 000 Bridge available from Stanford University – Mission office move NASA funding forward, if available rev. 13 15

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 Potential Liens rev. 13 16

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 LAT Schedule rev. 13 17

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 LAT Critical Path Tracker Bottom Tray Parts 4/9/04 (0) Integrate ACD 3/15/05 (0) Assemble Tracker Towers A-12 11/26/04 (0) Integrate Tkr/Cal Towers 12 -14 2/3/05 (0) Integrate Cross -LAT Plate 3/18/05 (0) System Test 6/6/05 (0) Integrate LATWide Electronics 2/25/05 (0) Ready for CD-4 and Pre-Environmental Test Review 6/7/05 (0) Completion Dates (baseline variance) rev. 13 18

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 Threats to Schedule • Path to Integration and Test of Tower A – Completing detailed documentation – Getting fabrication contracts in place – Anomaly in qualification testing • Path to Integration and Test of the complete instrument – Achieving planned production rates – Execution of I&T plans – Rapid response to anomalies • Path to Environmental Test (CD-4) – Anomalies requiring de-integration – Rapid analysis of and response to anomalies rev. 13 19

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 Level 1 and Level 2 Milestones rev. 13 20

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 Technical Status rev. 13 21

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 Closed Issues • CDR/CD-3 – Loss of CNES funding • Successfully transferred work to the US • Funded at the rebaseline – ASICs • All flight ASICs are delivered • No unresolved problems – CAL-GRID joint • Added “Menning Plates” • Issue closed – Cross LAT plate thermal connection • Chose direct connection between DAQ boxes and plate • Issue closed • Rebaseline Review – Tracker bottom tray design • Design complete and parts in fabrication rev. 13 22

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 Subsystem Status 1 • • Data Acquisition (SLAC) – Out for bid for the flight Tower Electronics Modules – Designs of all cards exist and prototypes in test – Flight Software peer review 2/26/04, monthly software demonstrations Tracker (UCSC, SLAC, INFN) – Production planning readiness workshop held in Italy – Thermal-Vacuum test of the engineering model complete – Flight production underway • Silicon ladders (30% complete), Multi Chip Modules, mid-trays, and bottom tray components – Need to complete the flight documentation and testing Mechanical (SLAC) – Flight GRID being machined Thermal (SLAC) – Flight heat pipes in fabrication (Lockheed Martin) rev. 13 23

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 Subsystem Status 2 • Calorimeter (NRL, IN 2 P 3) – Flight production well underway • • 80% of Cs. I crystals in hand • 25% of CDEs have been manufactured • Flight ASICs (~12, 000) have been tested • All machined parts and 3 flight structures are complete Anti-Coincidence Detector (GSFC) – Flight scintillator detectors, phototube and electronic assemblies and the structure are in production Integration and Test (SLAC) – Facilities are ready to begin flight integration in August • Plan in place for support equipment and procurement started – I&T Kickoff held in March Instrument Science Operating Center (SLAC, SU, KIPEC, Collaboration) – Planning underway – Manager in place by end of Summer (Bill Craig, Acting) • Science Analysis Software (SLAC, Collaboration) – Initial suite of software tools in place – Highly successful Data Challenge 1 rev. 13 24

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 Summary • No major outstanding technical issues – Analysis and testing continues • Producing flight hardware – One tower integrated in the grid this fiscal year – Tight, success-oriented schedule • Overall project contingency is OK – Project is 65% complete – Contingency is 29% of cost to go • Funding in the current fiscal year is an issue – All funding for FY 04 is allocated • Continued strong support from NASA, DOE, and the Collaboration • A strong, talented and committed staff rev. 13 25

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 Backup Slides rev. 13 26

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 Cost Performance Report rev. 13 27

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 Contingency Analysis rev. 13 28

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 History of Cost Estimate rev. 13 29

GLAST Mission - LAT Project DOE/NASA Review, March 31, 2004 Planned Staffing rev. 13 30